Observation by Martin Lewis: Mars comparison 25th Jan 2019 vs 31st Ju...

Uploaded by

Martin Lewis

Observer

Martin Lewis

Observed

2019 Jan 25 - 17:21

Uploaded

2019 Jan 26 - 11:53

Objects

Mars

Equipment

444mm Dobsonian
ASI174MM for IR ASI224MC for RGB

Location

St Albans

Target name

Mars

Title

Mars comparison 25th Jan 2019 vs 31st July 2018

About this image

Here's a size comparison of Mars with similar face presented to us- Close to opposition last July when it was ~24" across, versus the diminutive 6.4" it was last night (25th Jan 2019). Polar cap is now about 0.33" across which is close to the Dawes limit of my scope at 0.26".

IR image from last July as RGB much less detailed due to global dust storm in progress back then.

Cheers

Martin

Files associated with this observation

M_2018-07-31_IR_v2019-01-25_RGB_MLe v2.jpg (131.2 kB)

Like this image

Chris Dole, David Basey, Tom Moran, Graham Winstanley, Andy Wilson, Steve Knight, Nick Hewitt, Geof Lewis, Jeremy Shears, Peter Carson

Comments

Martin Lewis, 2019 Feb 03 - 21:18 UTC

Mars from 25/1/2019 was reprocessed with an improved method in AS3 on 3-2-2019 to bring out more details

Martin

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